package com.forum.ajax.homepage;

import java.io.IOException;
import java.io.PrintWriter;
import java.util.List;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.json.JSONObject;

import com.forum.domain.Ucg;
import com.forum.domain.UcgDAO;
import com.forum.domain.Ucu;
import com.forum.domain.UcuDAO;
import com.forum.domain.User;
import com.forum.domain.UserDAO;

public class UnfollowUser extends HttpServlet {

	/**
	 * Constructor of the object.
	 */
	public UnfollowUser() {
		super();
	}

	/**
	 * Destruction of the servlet. <br>
	 */
	public void destroy() {
		super.destroy(); // Just puts "destroy" string in log
		// Put your code here
	}

	/**
	 * The doGet method of the servlet. <br>
	 * 
	 * This method is called when a form has its tag value method equals to get.
	 * 
	 * @param request
	 *            the request send by the client to the server
	 * @param response
	 *            the response send by the server to the client
	 * @throws ServletException
	 *             if an error occurred
	 * @throws IOException
	 *             if an error occurred
	 */
	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		request.setCharacterEncoding("utf-8");
		response.setContentType("text/html");
		PrintWriter out = response.getWriter();
		out.println("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\">");
		out.println("<HTML>");
		out.println("  <HEAD><TITLE>A Servlet</TITLE></HEAD>");
		out.println("  <BODY>");
		out.print("    This is ");
		out.print(this.getClass());
		out.println(", using the GET method");
		out.println("  </BODY>");
		out.println("</HTML>");
		out.flush();
		out.close();
	}

	/**
	 * The doPost method of the servlet. <br>
	 * 
	 * This method is called when a form has its tag value method equals to
	 * post.
	 * 
	 * @param request
	 *            the request send by the client to the server
	 * @param response
	 *            the response send by the server to the client
	 * @throws ServletException
	 *             if an error occurred
	 * @throws IOException
	 *             if an error occurred
	 */
	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {

		response.setContentType("text/html; charset=utf-8");
		PrintWriter out = response.getWriter();

		String type = request.getParameter("type");
		int id = Integer.parseInt(request.getParameter("id"));
		UserDAO userdao = new UserDAO();
		User user = userdao.findById(id);

		int userid = Integer.parseInt(request.getParameter("userid"));
		User _user = userdao.findById(userid);

		try {
			if (type.equals("unfollow")) {
				UcuDAO ucudao = new UcuDAO();
				List<Ucu> uculist = ucudao.findByProperty("userByUserid", user);
				for (int i = 0; i < uculist.size(); i++) {
					if (uculist.get(i).getUserByFollowingid() == _user) {
						ucudao.delete(uculist.get(i));
						ucudao.getSession().beginTransaction().commit();
						user.setUsercount(user.getUsercount());
						break;
					}
				}
				out.print("success");
			} else {
				UcuDAO ucuDAO = new UcuDAO();
				List<Ucu> uculist = ucuDAO.findByProperty("userByUserid", user);
				for (int i = 0; i < uculist.size(); i++) {
					if (uculist.get(i).getUserByFollowingid() == _user) {
						out.print("已经关注!");
						return;
					}
				}
				Ucu ucu = new Ucu(_user, user);
				ucuDAO.save(ucu);
				ucuDAO.getSession().beginTransaction().commit();
				user.setUsercount(user.getUsercount() + 1);
				_user.setFollowercount(_user.getFollowercount() + 1);

				JSONObject userjsonJsonObject = new JSONObject();
				userjsonJsonObject.accumulate("id", _user.getUserid());
				userjsonJsonObject.accumulate("picurl", user.getPicurl());
				userjsonJsonObject.accumulate("nickname", _user.getNickname());
				userjsonJsonObject.accumulate("realname", _user.getRealname());
				userjsonJsonObject.accumulate("intro", _user.getIntroduction());
				userjsonJsonObject.accumulate("email", _user.getEmail());

				out.print(userjsonJsonObject);
			}
		} catch (Exception e) {
			e.printStackTrace();
			out.print("error");
		}
	}

	/**
	 * Initialization of the servlet. <br>
	 * 
	 * @throws ServletException
	 *             if an error occurs
	 */
	public void init() throws ServletException {
		// Put your code here
	}

}
